How popular is Terea?

Terea is an unusual given name for women. Terea is an equally unusual last name for all people. (2000 U.S. Demographics)

Which version is better?

with its source form and related girl names. Teri, Terri, Terrie and Terry are the popular variation forms of Terea (outside Top 2000). Other variants, like Terrey, are seldom used. Usage of these relations of Terea was at its most widespread in the 1960s (adoption of 0.49%). (Top Baby Names, 2015)